Hi,

On 13 Aug 2001, at 12:23, David Maxwell wrote:
> There are several problems to deal with, and no easy solution, so I
> think you dreamt it ;-)

it could be (somewhat) implemented at protocol level. You could 
manipulate your DNS server to respond with different addresses. 
Bind 9 AFIAIK has something like that, bit it should be no problem to 
make such work for other DNS servers.

HTH

mike